[FIX] mrp: Unbuild order with serial number

When unbuilding an order with serial number, the quant with the right
serial number must be found in the system either it raises an UserError
explaining  what's the problem.

PS: A problem was found when we tried to unbuild two times the same MO.
After the first unbuild, we deleted it and recreated the same one.

opw:748472

addons/mrp/i18n/mrp.pot

@@ -3266,6 +3266,18 @@ msgstr ""
 msgid "You cannot use the same serial number in two different lines."
 msgstr ""
 
+#. module: mrp
+#: code:addons/mrp/models/mrp_unbuild.py:110
+#, python-format
+msgid "You don't have in the stock the lot %s."
+msgstr ""
+
+#. module: mrp
+#: code:addons/mrp/models/mrp_unbuild.py:125
+#, python-format
+msgid "You don't have in the stock the required lot/serial number for %s ."
+msgstr ""
+
 #. module: mrp
 #: code:addons/mrp/wizard/change_production_qty.py:44
 #, python-format

addons/mrp/models/mrp_unbuild.py

@@ -106,6 +106,8 @@ class MrpUnbuild(models.Model):
         self.env['stock.quant'].quants_reserve(quants, consume_move)
 
         if consume_move.has_tracking != 'none':
+            if not quants[0][0]:
+                raise UserError(_("You don't have in the stock the lot %s.") % (self.lot_id.name,))
             self.env['stock.move.lots'].create({
                 'move_id': consume_move.id,
                 'lot_id': self.lot_id.id,
@@ -119,6 +121,8 @@ class MrpUnbuild(models.Model):
         for produce_move in produce_moves:
             if produce_move.has_tracking != 'none':
                 original = original_quants.filtered(lambda quant: quant.product_id == produce_move.product_id)
+                if not original.lot_id:
+                    raise UserError(_("You don't have in the stock the required lot/serial number for %s .") % (produce_move.product_id.name,))
                 self.env['stock.move.lots'].create({
                     'move_id': produce_move.id,
                     'lot_id': original.lot_id.id,